Getting the paths correct

[eluser]baalwww[/eluser]
Newbie question. I have my main directory, and the system directory beneath that. I'm able to find my images using the html helper and img() instead of <img>. Nothing else seemed to work.

The problems I'm still having are:

1. Cannot find the css file. I have it in the root (same place where the images folder is), but it's not found. I don't think a leading slash will help, because the base is actually two subdirectories in from the domain name (mydomain.com/allprojects/thisproject

2. What do I do about referring to images, etc. in javascript in my view? Use the img() calls there too?

3. How about the urls for background images in the css file?